:symbol:

:singleton_method: 
:instance_method: 
  :<=>: [Fixnum]
  :==: [TrueClass, FalseClass]
  :=~: [Integer, NilClass]
  :match: [Integer, NilClass]
  :[]: [String, NilClass]
  :slice: [String, NilClass]
  :capitalize: [Symbol]
  :casecmp: [Fixnum]
  :downcase: [Symbol]
  :empty?: [TrueClass, FalseClass]
  :encoding: [Encoding]
  :id2name: [String]
  :to_s: [String]
  :inspect: [String]
  :intern: [Symbol]
  :to_sym: [Symbol]
  :length: [Integer]
  :size: [Integer]
  :succ: [Symbol]
  :next: [Symbol]
  :swapcase: [Symbol]
  :to_proc: [Proc]
  :upcase: [Symbol]